Finding the Third Proportional to 27,072.50 and 42,081

Step by Step Solution

1. Step 1: Write the proportion equation
   27,072.50 : 42,081 = 42,081 : x
2. Step 2: Convert to fraction form
   27,072.50/42,081 = 42,081/x
3. Step 3: Cross multiply
   27,072.50x = 42,081 × 42,081
4. Step 4: Simplify right side
   27,072.50x = 1,770,810,561
5. Step 5: Solve for x
   x = 1,770,810,561/27,072.50
6. Step 6: Final answer
   x = 65,409.94